Lesson 10

Solving Problems with Trigonometry

Lesson Narrative

In this lesson students apply the concepts of trigonometry to two different situations. In the first, students need to interpret a diagram with limited information to find a way to calculate the dimensions of a polygon. In the second, students are given information about a plane’s flight path, but they need to draw their own diagram as well as grapple with converting units. In each of these situations, students are making sense of problems (MP1) before they are able to use trigonometry to solve the problem.

Learning Goals

Teacher Facing

  • Use trigonometry to solve problems (using words and other representations).

Student Facing

  • Let’s solve problems about right triangles.

Required Preparation

Be prepared to display applets for all to see throughout the lesson.

Learning Targets

Student Facing

  • I can use trigonometry to solve problems.

CCSS Standards


Building Towards

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